Experts say the hottest three-day stretch of the year is coming to the Southland.
An excessive heat warning has been issued by the National Weather Service until 10 p.m. on Wednesday night. The warning is in effect for the valleys, mountains and both coastal and inland Orange counties.
The heat wave is expected to peak Monday but temps could stay above the century mark through the week. The hottest communities in L.A. County Monday will be Woodland Hills and Lancaster, with both expected to touch 109 degrees.
"Any place inland will see triple digit heat today and at least until Wednesday," said Kurt Kaplan with the National Weather Service.